a=int(input())
if 400<=a and a<=599:
    print(8)
if 600<=a and a<=799:
    print(7)
if 800<=a and a<=999:
    print(6)
if 1000<=a and a<=1199:
    print(5)
if 1200<=a and a<=1399:
    print(4)
if 1400<=a and a<=1599:
    print(3)
if 1600<=a and a<=1799:
    print(2)
if 1800<=a and a<=1999:
    print(1) a=int(input()) a int(input()) int input() input if 400<=a and a<=599:
    print(8) 400<=a and a<=599 400<=a 400 a a<=599 a 599 print(8) print 8 if 600<=a and a<=799:
    print(7) 600<=a and a<=799 600<=a 600 a a<=799 a 799 print(7) print 7 if 800<=a and a<=999:
    print(6) 800<=a and a<=999 800<=a 800 a a<=999 a 999 print(6) print 6 if 1000<=a and a<=1199:
    print(5) 1000<=a and a<=1199 1000<=a 1000 a a<=1199 a 1199 print(5) print 5 if 1200<=a and a<=1399:
    print(4) 1200<=a and a<=1399 1200<=a 1200 a a<=1399 a 1399 print(4) print 4 if 1400<=a and a<=1599:
    print(3) 1400<=a and a<=1599 1400<=a 1400 a a<=1599 a 1599 print(3) print 3 if 1600<=a and a<=1799:
    print(2) 1600<=a and a<=1799 1600<=a 1600 a a<=1799 a 1799 print(2) print 2 if 1800<=a and a<=1999:
    print(1) 1800<=a and a<=1999 1800<=a 1800 a a<=1999 a 1999 print(1) print 1 a=int(input()) int(input()) a
a=int(input())
if 400<=a and a<=599:
    print(8)
if 600<=a and a<=799:
    print(7)
if 800<=a and a<=999:
    print(6)
if 1000<=a and a<=1199:
    print(5)
if 1200<=a and a<=1399:
    print(4)
if 1400<=a and a<=1599:
    print(3)
if 1600<=a and a<=1799:
    print(2)
if 1800<=a and a<=1999:
    print(1)